NGC 6781 in Aquila

tornado33 · #1 19-08-2009, 09:32 PM

Continuing my imaging of northern objects, while waiting for the Ring nebula to rise I went for NGC 6781
6x10 mins ISO 400. LPS, MPCC coma corrector, 6 inch f3.6 Cometracker SN, modded 350D

Full frame version here

After 6 subs it clouded over so the Ring nebula will have to wait for another time.
Scott

renormalised (Carl) · #2 20-08-2009, 10:41 AM

Interesting looking PN....needs long FL, though

Ric · #3 20-08-2009, 10:53 AM

A great looking PN Scott, the colour is interesting.

Cheers

strongmanmike (Michael) · #4 21-08-2009, 01:41 AM

Ah, yet another cosmic ring aftermath, they're everywhere huh? Wonder how many PN's are known?

Mike

tornado33 · #5 22-08-2009, 01:22 AM

Thanks.
When I turn off the magnitude limit in Star Atlas pro, it shows incredible numbers of planetary nebulas particularily near the galactic plane, but many of them are a few seconds or less in size, and/or mag 18 or fainter, not worth even the big RC people going after unless theyve got a site with exceptional seeing.
Scott

renormalised (Carl) · #6 22-08-2009, 06:32 PM

Quote:

Originally Posted by strongmanmike

Ah, yet another cosmic ring aftermath, they're everywhere huh? Wonder how many PN's are known?

Mike

Something like 4000 or so, for memory.